The capacity (size) of the hard disk determines how much data the disc can accommodate.

Width

29.85 mm (2.99 cm)

238.76 mm (23.88 cm)

Height

7 mm (0.7 cm)

149.86 mm (14.99 cm)

Depth

3.85 mm (0.39 cm)

101 mm (10.1 cm)

Internal interface

SATA II (1)

SATA III (63)

PCIe (3)

mSATA (2)

M.2 (SATA) (2)

M.2 (NVMe) (1)

U.2 (4)

Determines the way in which the hard drive is connected to the computer, namely the type of connector through which the drive connects to the device. Each type of connection is unique, and in most cases these connections are not interchangeable.